251
Days Away
A Driftless take on the classic Backyard Ultra–Last Person Standing format on an old family dairy farm, featuring a 1-ish mile looped course completed every 20 minutes until only one person remains.
Race Day
May 15, 2027
Registration opens, price changes, race updates: straight to your inbox.
Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.
Make Race PlanAre you the race director for Rumble on the Ridge?
Claim this race to manage registration, volunteers, and race-day ops on Endurance HQ.